Aging, yielding, and shear banding in soft colloidal glasses

P. T. Callaghan, S. A. Rogers, D. Vlassopoulos

Research output: Contribution to journalArticlepeer-review


Soft colloidal interactions in colloidal glasses are modeled using suspensions of multiarm star polymers. Using a preshearing protocol that ensures a reproducible initial state ("rejuvenation" of the system), we report here the evolution of the flow curve from monotonically increasing to one dominated by a stress plateau, demonstrating a corresponding shear-banded state. Phenomenological understanding is provided through a scalar model that describes the free-energy landscape.

Original languageEnglish (US)
Article number128304
JournalPhysical review letters
Issue number12
StatePublished - Mar 28 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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